How to determine the type of strabismus? There are several types of strabismus, including horizontal strabismus, vertical strabismus, and rotational strabismus. The type of strabismus is determined by several specialized tests. For example, corneal reflection method, masking de-masking method, alternating masking method, trigeminal method and monocular eye movement, bilateral eye movement, etc., a combination of multiple methods and comprehensive judgment are needed to make an accurate diagnosis. What is the use of determining the type of strabismus? Only when the type of strabismus is determined can the plan of surgery be determined, making the treatment more reasonable and scientific and achieving the best treatment effect. What tests are needed to confirm the diagnosis of strabismus? To accurately diagnose strabismus, a combination of tests such as general visual acuity examination, dilated pupil examination, corneal reflection examination, trigeminal examination, alternating masking method, masking de-masking method and eye movement are required.